One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,9)(5,13)(6,7)(10,15)(11,14)(12,16)(17,18)(19,24)(20,29)(21,26)(22,30)(23,25)(27,32)(28,31)(36,44)(40,47)(43,45)(46,48) involution — undirected(2,7)(4,12)(8,14)(10,13)(17,19,23,20)(18,24,25,29)(21,30,31,27)(22,28,32,26)(33,34)(35,42)(36,40)(37,39)(38,41)(43,48)(44,47)(45,46)(2,7)(3,11)(9,16)(10,13)(18,25)(19,20)(26,28)(27,30)(33,35,38,37)(34,39,41,42)(36,43,44,45)(40,46,47,48)(1,3,6,11)(2,8,7,14)(4,10,12,13)(5,9,15,16)(17,20,23,19)(18,24,25,29)(21,30,31,27)(22,26,32,28)(33,36)(34,40)(35,43)(37,45)(38,44)(39,46)(41,47)(42,48)(1,4)(2,9)(3,10)(5,14)(6,12)(7,16)(8,15)(11,13)(17,21,23,31)(18,26,25,28)(19,27,20,30)(22,24,32,29)(33,37,38,35)(34,39,41,42)(36,45,44,43)(40,46,47,48)(1,5,6,15)(2,10,7,13)(3,9,11,16)(4,8,12,14)(17,22,23,32)(18,27,25,30)(19,28,20,26)(21,29,31,24)(33,34)(35,39)(36,40)(37,42)(38,41)(43,46)(44,47)(45,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.